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QveST [7]
3 years ago
14

List 3 examples of pure substances

Chemistry
2 answers:
ollegr [7]3 years ago
4 0

1. water (H2O) 2. helium (He) 3. iron (Fe)

Brrunno [24]3 years ago
4 0

Table salt, table sugar, and gold.

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bronchi

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How to convert 250 in scientific notation
cricket20 [7]
In scientific notation, a number is less than ten but more than one.

Move the decimal point from 0, 250.000 <- this is the same as 250 to between 2 and 5.

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~kaikers
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3 years ago
in an experiment 3.5g of element A reacted with 4.0g of element G to form a compound Calculate the empirical formula for this co
kolezko [41]

Additional information

Relative atomic mass(Ar) : A=7, G=16

The empirical formula : A₂G

<h3>Further explanation</h3>

Given

3.5g of element A

4.0g of element G

Required

the empirical formula for this compound

Solution

The empirical formula is the smallest comparison of atoms of compound forming elements.

The empirical formula also shows the simplest mole ratio of the constituent elements of the compound

mol of element A :

\tt mol=\dfrac{mass}{Ar}\\\\mol=\dfrac{3.5}{7}=0.5

mol of element G :

\tt mol=\dfrac{4}{16}=0.25

mol ratio A : G = 0.5 : 0.25 = 2 : 1

4 0
2 years ago
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alekssr [168]
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The materials in the flux covering on an electrode determine the electrical characteristics of the electrode.
nataly862011 [7]

Answer:

a. true

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It is true that, the materials in the flux covering on an electrode determine the electrical characteristics of the electrode.

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